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During the 2015-16 season, CottonInfo's REOs conducted on-farm N trials across five cotton growing valleys. The trials aimed to understand the relationship between N application rate, timing, and yield, and to demonstrate methods such as petiole testing to improve confidence and better manage N inputs.

This report, published in 2017, collates the key findings from the trials. One of the key findings was that growers are applying much higher rates of N than the crop needs to achieve current yields.